Clinical Reasoning 3.0.0 Preview 3

What's Changed

• snapshot v3.0.0-PRE3 by @mdnazmulkarim in #301
• Share cache around by @JPercival in #304
• Fix Author extension for items populated with context by @barhodes in #305
• Async security context by @Capt-Mac in #306
• Migrate agg threading by @Capt-Mac in #308
• Update to latest version of cql / hapi by @JPercival in #309

Full Changelog: v3.0.0.PRE-2...v3.0.0.PRE-3